Belgachia (otherwise known as Theism Belgachia for sponsorship reasons) is an underground metro station on the North-South corridor of the Blue Line of Kolkata Metro in Kolkata, West Bengal, India. It is located at Belgachia.

Belgachia Station was commissioned by the Kolkata Metro as part of the first transit line of the metro system, commonly known as the North-South corridor. The station was the penultimate stop before Dum Dum, which, until the opening of the Noapara stop, was the terminal station on the railway system. The station became the first underground station on the northern side and continues to be one of the shallowest, lying at a depth of only 5 metres below Belgachia Road.

As part of the drive to increase non-fare revenue of the Kolkata Metro, the station was leased for branding and semi-naming rights to Kolkata-based conglomerate, Theism Group, rebranding it as Theism Belgachia officially. It was redecorated and rebranded by the corporate organization to become India's first health station.

G	Street Level	Exit/ Entrance
M	Mezzanine	Fare control, station agent, Ticket/token, Theism Diagnostics kiosk
P	Platform 2 Southbound	Towards → Kavi Subhash next station is Shyambazaar
	Island platform | Doors will open on the right
	Platform 1 Northbound	Towards ← Dakshineshwar next station is Dum Dum

Autos ply on Belgachia-Lake Town and Belgachia-Bangur Avenue routes.

Bus route number 3B (Paikpara), 3C/1, 3C/2, 3D (Paikpara), 3D/1 (Paikpara), 30C, 30D, 47B, 79B, 91, 91A, 93, 211A, 215/1, 219 (Paikpara), 219/1 (Paikpara), 227, DN18, KB16, S160 (Mini), C11, T8, AC40 etc. serve the station.

Kolkata railway station, Patipukur railway station and Tala railway station are located nearby.

• 
  Belgachia Metro Station Gate 3
• 
  Belgachia Dum Dum bound platform
• 
  Shyambazar bound tracks at Belgachia
• 
  A view of the platform naming board at Belgachia
• 
  Theism Diagnostics Kiosk at Belgachia

Gate No. 1	Gate No. 2	Gate No. 3
Duttabagan Milk Colony	CTC (WBTC) Depot	Main Gate- West Bengal University of Animal & Fishery Sciences

• Kolkata/North Kolkata travel guide from Wikivoyage
• Official Website for line 1
• UrbanRail.Net – descriptions of all metro systems in the world, each with a schematic map showing all stations.
• "Belgachia station" (Map). Google Maps.